Eversion is a platform game by British indie studio Zaratustra Productions for Microsoft Windows.

At specific points, the player may activate an "eversion" ability that changes the state of the stage by removing obstacles and creating platforms, making it a necessary tool for progress.

The game includes a bare-bones narrative centering on the rescue of a captured princess and initially presents a colorful and whimsical atmosphere.

The competition's name and concept were derived from a commonplace book kept by American author H. P. Lovecraft, in which he would jot down strange and often disjointed story ideas, generally lacking in context.

Eversion was particularly inspired by an entry that reads "sounds - possibly musical - heard in the night from other worlds or realms of being".